function resetIdentityMaps()
 {
     VF_Vehicle_Finder_IdentityMap::reset();
     VF_Vehicle_Finder_IdentityMapByLevel::reset();
     VF_Level_IdentityMap::reset();
     VF_Level_IdentityMap_ByTitle::reset();
     VF_Schema::reset();
     VF_Vehicle_Finder::$IDENTITY_MAP_FINDBYLEVEL = array();
 }
 function identityMap()
 {
     return VF_Level_IdentityMap::getInstance();
 }